Question

Which of the following is correct?

(a) Sway brace is typically used for main landing gear

(b) Lift is always same as weight

(c) Lift opposes the aircraft forward motion

(d) Drag is propulsive force produced by landing gear to accelerate an aircraft

The question was asked in semester exam.

My question is based upon Gear-Retraction Geometry in section Landing Gear and Subsystems of Aircraft Design

Answer 1

Correct answer is (a) Sway brace is typically used for main landing gear

The best I can explain: Sway brace term is typically used for main landing gear. It is also used to withstand aerodynamic loads and breaking loads. They are used to provide lateral support for the gears. Aircraft forward motion is primarily opposed by drag. Lift is not always same as weight.